Experimental investigation on the effect of asymmetrical sealing on tunnel fire behavior

被引：91

作者：

Chen Chang-kun ^{[1
]}

Zhu Cong-xiang ^{[1
]}

Liu Xuan-ya ^{[2
]}

Yu Nian-hao ^{[2
]}

机构：

[1] Cent S Univ, Inst Disaster Prevent Sci & Safety Technol, Changsha 410075, Hunan, Peoples R China

[2] Key Lab Bldg Fire Protect Engn & Technol MPS, Tianjin 300381, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2016年 / 92卷

基金：

中国国家自然科学基金;

关键词：

Tunnel fire; Asymmetrical sealing; Sealing ratio; Temperature distribution; MAXIMUM SMOKE TEMPERATURE; CEILING GAS TEMPERATURE; LONGITUDINAL VENTILATION; NATURAL VENTILATION;

D O I：

10.1016/j.ijheatmasstransfer.2015.08.079

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Sealing the tunnel entrance is a common tactic for tunnel fire fighting, while it is not easy to seal the two entrances synchronously in actual tunnel fire-fighting process. A set of reduced experiments were then conducted to investigate the effect of asymmetrical sealing of tunnel entrances on tunnel fire behavior and temperature distribution. The data of temperature, radiative heat flux and mass loss rate, etc. were acquired. The results demonstrate that hot smoke region shifts to the side not completely sealed, and burning at the side with less sealing ratio is more violent with higher smoke temperature and longer hot smoke plume. Plume temperature at the tunnel entrance could reach to 300 degrees C as measured in the experiments and jet flame was observed at the end not completely sealed. These would lead to great danger to fire fighters in actual tunnel fire fighting. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：55 / 65

页数：11

共 30 条

[1] Carvel R, 2005, A History of Fire Incidents in Tunnels
[2] Carvel R.O, 2012, P 5 INT S TUNN SAF S, P27
[3] Variation of heat release rate with forced longitudinal ventilation for vehicle fires in tunnels
Carvel, RO
Beard, AN
Jowitt, PW
Drysdale, DD
[J]. FIRE SAFETY JOURNAL, 2001, 36 (06) : 569 - 596
[4] Chen CK, 2012, DISASTER ADV, V5, P209
[5] Influence of longitudinal fire location on smoke characteristics under the tunnel ceiling
Fan, C. G.
Ji, J.
Sun, J. H.
[J]. FIRE AND MATERIALS, 2015, 39 (01) : 72 - 84
[6] Experimental study on transverse smoke temperature distribution in road tunnel fires
Fan, C. G.
Ji, J.
Gao, Z. H.
Sun, J. H.
[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2013, 37 : 89 - 95
[7] Experimental analysis of the influence of accumulated upper hot layer on the maximum ceiling gas temperature by a modified virtual source origin concept
Gao, Z. H.
Ji, J.
Fan, C. G.
Sun, J. H.
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 84 : 262 - 270
[8] Gehandler J., 2014, CASE STUDIES FIRE SA, V1, P18
[9] Heat release rates of multiple objects at varying distances
Hansen, Rickard
Ingason, Haukur
[J]. FIRE SAFETY JOURNAL, 2012, 52 : 1 - 10
[10] An engineering tool to calculate heat release rates of multiple objects in underground structures
Hansen, Rickard
Ingason, Haukur
[J]. FIRE SAFETY JOURNAL, 2011, 46 (04) : 194 - 203

← 1 2 3 →